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Volume 27, Issue 4 (2020)
Volume 27, Issue 4 (2020)
Deducing a Variational Principle with Minimal A Priori Assumptions
Andrew Krieger, Georg Menz, Martin Tassy
P4.1
PDF
Maximum $k$-Sum $\mathbf{n}$-Free Sets of the 2-Dimensional Integer Lattice
Ilkyoo Choi, Ringi Kim, Boram Park
P4.2
PDF
On Growth of the Set $A(A+1)$ in Arbitrary Finite Fields
Ali Mohammadi
P4.3
PDF
Finding Unavoidable Colorful Patterns in Multicolored Graphs
Matt Bowen, Ander Lamaison, Alp Müyesser
P4.4
PDF
A Counterexample to a Conjecture on Schur Positivity of Chromatic Symmetric Functions of trees
Emmanuella Sandratra Rambeloson, John Shareshian
P4.5
PDF
Phylogenetic Trees, Augmented Perfect Matchings, and a Thron-type Continued Fraction (T-fraction) for the Ward Polynomials
Andrew Elvey Price, Alan D. Sokal
P4.6
PDF
A Combinatorial Formula for Kazhdan-Lusztig Polynomials of $\rho$-Removed Uniform Matroids
Kyungyong Lee, George D. Nasr, Jamie Radcliffe
P4.7
PDF
Balanced Equi-$n$-Squares
Saieed Akbari, Trent G. Marbach, Rebecca J. Stones, Zhuanhao Wu
P4.8
PDF
On Fractional Fragility Rates of Graph Classes
Zdeněk Dvořák, Jean-Sébastien Sereni
P4.9
PDF
On the Longest Common Subsequence of Conjugation Invariant Random Permutations
Mohamed Slim Kammoun
P4.10
PDF
The Cover Time of a Biased Random Walk on a Random Regular Graph of Odd Degree
Tony Johansson
P4.11
PDF
Blockers for Triangulations of a Convex Polygon and a Geometric Maker-Breaker Game
Chaya Keller, Yael Stein
P4.12
PDF
Covering Small Subgraphs of (Hyper)Tournaments with Spanning Acyclic Subgraphs
Raphael Yuster
P4.13
PDF
The Maximum Number of Cliques in Hypergraphs without Large Matchings
Erica L.L. Liu, Jian Wang
P4.14
PDF
The Terwilliger Algebra of the Twisted Grassmann Graph: the Thin Case
Hajime Tanaka, Tao Wang
P4.15
PDF
Harmonic Bases for Generalized Coinvariant Algebras
Brendon Rhoades, Tianyi Yu, Zehong Zhao
P4.16
PDF
Clustering Powers of Sparse Graphs
Jaroslav Nešetřil, Patrice Ossona de Mendez, Michał Pilipczuk, Xuding Zhu
P4.17
PDF
Monochromatic Subgraphs in Iterated Triangulations
Jie Ma, Tianyun Tang, Xingxing Yu
P4.18
PDF
A Sauer–Shelah–Perles Lemma for Lattices
Stijn Cambie, Bogdan Chornomaz, Zeev Dvir, Yuval Filmus, Shay Moran
P4.19
PDF
Stieltjes Moment Sequences for Pattern-Avoiding Permutations
Alin Bostan, Andrew Elvey Price, Anthony John Guttmann, Jean-Marie Maillard
P4.20
PDF
Volumes of Flow Polytopes Related to Caracol Graphs
Jihyeug Jang, Jang Soo Kim
P4.21
PDF
The Maximum Spectral Radius of Graphs Without Friendship Subgraphs
Sebastian Cioabă , Lihua Feng, Michael Tait, Xiao-Dong Zhang
P4.22
PDF
The Bipartite $K_{2,2}$-Free Process and Bipartite Ramsey Number $b(2, t)$
Deepak Bal, Patrick Bennett
P4.23
PDF
Sharper Bounds and Structural Results for Minimally Nonlinear 0-1 Matrices
Jesse Geneson, Shen-Fu Tsai
P4.24
PDF
Existence and Hardness of Conveyor Belts
Molly Baird, Sara C. Billey, Erik D. Demaine, Martin L. Demaine, David Eppstein, Sándor Fekete, Graham Gordon, Sean Griffin, Joseph S.B. Mitchell, Joshua P. Swanson
P4.25
PDF
Generalizing Tropical Kontsevich's Formula to Multiple Cross-Ratios
Christoph Goldner
P4.26
PDF
Nonassociativity of the Norton Algebras of Some Distance Regular Graphs
Jia Huang
P4.27
PDF
Local Dimension is Unbounded for Planar Posets
Bartłomiej Bosek, Jarosław Grytczuk, William T. Trotter
P4.28
PDF
Switch-Based Markov Chains for Sampling Hamiltonian Cycles in Dense Graphs
Pieter Kleer, Viresh Patel, Fabian Stroh
P4.29
PDF
On the Existence of Hamilton Cycles with a Periodic Pattern in a Random Digraph
Alan Frieze, Xavier Pérez-Giménez, Paweł Prałat
P4.30
PDF
Short Cycle Covers of Graphs with at Most 77% Vertices of Degree Two
Anna Kompišová, Robert Lukot'ka
P4.31
PDF
The $Q_2$-Free Process in the Hypercube
J. Robert Johnson, Trevor Pinto
P4.32
PDF
On Minimal Distance-Regular Cayley Graphs of Generalized Dihedral Groups
Štefko Miklavič, Primož Šparl
P4.33
PDF
Smallest Percolating Sets in Bootstrap Percolation on Grids
Michał Przykucki, Thomas Shelton
P4.34
PDF
Minimal Non-Odd-Transversal Hypergraphs and Minimal Non-Odd-Bipartite Hypergraphs
Yi-Zheng Fan, Yi Wang, Jiang-Chao Wan
P4.35
PDF
On the Minimum Size of Hamilton Saturated Hypergraphs
Andrzej Ruciński, Andrzej Żak
P4.36
PDF
The Noncrossing Bond Poset of a Graph
C. Matthew Farmer, Joshua Hallam, Clifford Smyth
P4.37
PDF
The Boolean Rainbow Ramsey Number of Antichains, Boolean Posets and Chains
Hong-Bin Chen, Yen-Jen Cheng, Wei-Tian Li, Chia-An Liu
P4.38
PDF
Calculating the Dimension of the Universal Embedding of the Symplectic Dual Polar Space using Languages
Carlos Segovia, Monika Winklmeier
P4.39
PDF
Flag-Transitive Point-Primitive Symmetric $(v,k,\lambda)$ Designs with Large $k$
Zhilin Zhang, Pingzhi Yuan, Shenglin Zhou
P4.40
PDF
Unfolding Cubes: Nets, Packings, Partitions, Chords
Kristin DeSplinter, Satyan L. Devadoss, Jordan Readyhough, Bryce Wimberly
P4.41
PDF
Extremal Overlap-Free and Extremal $\beta$-Free Binary Words
Lucas Mol, Narad Rampersad, Jeffrey Shallit
P4.42
PDF
$P_{n}$-Induced-Saturated Graphs Exist for all $n \geqslant 6$
Vojtěch Dvořák
P4.43
PDF
Pattern Avoiding Permutations with a Unique Longest Increasing Subsequence
Miklós Bóna, Elijah DeJonge
P4.44
PDF
Saturation Number of Berge Stars in Random Hypergraphs
Lele Liu, Changxiang He, Liying Kang
P4.45
PDF
Avoidable Paths in Graphs
Marthe Bonamy, Oscar Defrain, Meike Hatzel, Jocelyn Thiebaut
P4.46
PDF
Spectral Lower Bounds for the Quantum Chromatic Number of a Graph – Part II
Pawel Wocjan, Clive Elphick, Parisa Darbari
P4.47
PDF
Counting Linear Extensions of Restricted Posets
Sam Dittmer, Igor Pak
P4.48
PDF
Low Weight Perfect Matchings
Stefan Ehard, Elena Mohr, Dieter Rautenbach
P4.49
PDF
Sign Variation and Descents
Nantel Bergeron, Aram Dermenjian, John Machacek
P4.50
PDF
An Update on Reconfiguring $10$-Colorings of Planar Graphs
Zdeněk Dvořák, Carl Feghali
P4.51
PDF
On the Gonality of Cartesian Products of Graphs
Ivan Aidun, Ralph Morrison
P4.52
PDF
Two-Distance-Primitive Graphs
Wei Jin, Ci Xuan Wu, Jin Xin Zhou
P4.53
PDF
Beck's Theorem for Plane Curves
Mario Huicochea
P4.54
PDF
Generalized Spectral Characterization of Mixed Graphs
Wei Wang, Lihong Qiu, Jianguo Qian, Wei Wang
P4.55
PDF
On Volume Functions of Special Flow Polytopes Associated to the Root System of Type $A$
Takayuki Negishi, Yuki Sugiyama, Tatsuru Takakura
P4.56
PDF
Decomposable Twofold Triple Systems with Non-Hamiltonian 2-Block Intersection Graphs
Rosalind A. Cameron, David A. Pike
P4.57
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